Cisco Cisco Content Security Management Appliance M1070 Guía Del Usuario
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AsyncOS 9.5.x for Cisco Content Security Management Appliances User Guide
Chapter 4 Using Centralized Email Security Reporting
Understanding the Email Reporting Pages
Overall CPU Usage
Email Security appliances are optimized to use idle CPU resources to improve message throughput. High
CPU usage may not indicate a system capacity problem. If the high CPU usage is coupled with
consistent, high-volume memory page swapping, you may have a capacity problem.
CPU usage may not indicate a system capacity problem. If the high CPU usage is coupled with
consistent, high-volume memory page swapping, you may have a capacity problem.
Note
This graph also indicates a threshold for CPU usage that is a visual reference only. To adjust the position
of this line, see
of this line, see
. You can configure your Email Security appliances to send you alerts that will
suggest actions that you can take to address capacity issues.
This page also shows a graph that displays the amount of CPU used by different functions, including
mail processing, spam and virus engines, reporting, and quarantines. The CPU-by-function graph is a
good indicator of which areas of the product use the most resources on your system. If you need to
optimize your appliance, this graph can help you determine which functions may need to be tuned or
disabled.
mail processing, spam and virus engines, reporting, and quarantines. The CPU-by-function graph is a
good indicator of which areas of the product use the most resources on your system. If you need to
optimize your appliance, this graph can help you determine which functions may need to be tuned or
disabled.
Memory Page Swapping
The memory page swapping graph shows how frequently the system must page to disk, in kilobytes per
second.
second.
The system is designed to swap memory regularly, so some memory swapping is expected and is not an
indication of problems with your appliance. Unless the system consistently swaps memory in high
volumes, memory swapping is normal and expected behavior (especially on C170 appliances). To
improve performance, you may need to add Email Security appliances to your network or tune your
configuration to ensure maximum throughput.
indication of problems with your appliance. Unless the system consistently swaps memory in high
volumes, memory swapping is normal and expected behavior (especially on C170 appliances). To
improve performance, you may need to add Email Security appliances to your network or tune your
configuration to ensure maximum throughput.
Note
This graph also indicates a threshold for memory page swapping that is a visual reference only. To adjust
the position of this line, see
the position of this line, see
. You can configure your Email Security appliances to send you alerts
that will suggest actions that you can take to address capacity issues.
Resource Conservation Activity
The resource conservation activity graph shows the number of times the Email Security appliance
entered Resource Conservation Mode (RCM). For example, if the graph shows
entered Resource Conservation Mode (RCM). For example, if the graph shows
n
times, it means that the
appliance has entered RCM
n
times and exited at least
n-1
times.
Your appliances should enter RCM infrequently and only during a very large or unusual increase in mail
volume. If the Resource Conservation Activity graph shows that your appliance is entering RCS
frequently, it may be an indication that the system is becoming overloaded.
volume. If the Resource Conservation Activity graph shows that your appliance is entering RCS
frequently, it may be an indication that the system is becoming overloaded.
System Capacity – All
The All page consolidates all the previous system capacity reports onto a single page so you can view
the relationship between the different reports. For example, you might see that the message queue is high
at the same time that excessive memory swapping takes place. This might be an indication that you have
a capacity problem. You may want to save this page as a PDF file to preserve a snapshot of system
performance for later reference (or to share with support staff).
the relationship between the different reports. For example, you might see that the message queue is high
at the same time that excessive memory swapping takes place. This might be an indication that you have
a capacity problem. You may want to save this page as a PDF file to preserve a snapshot of system
performance for later reference (or to share with support staff).